A. I. Maslii and N. P. Poddubnyi
Institute of Solid-State Chemistry and Mechanical Chemistry, Siberian Division,
Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128 Russia
Received June 18, 1998
Abstract—The effect of the number and coordinates of independent current leads (ICL) and the current distri-
bution between them on the efficiency of multisectional porous electrodes (MPE) with insulating diaphragms
between sections is analyzed theoretically. As opposed to short-circuited current leads, ICL allow the current dis-
tribution to be controlled in porous matrices of any conductivity. The optimum arrangement of ICL and the cur-
rent distribution between them are rather complex functions of many factors. A uniform arrangement of ICL over
MPE’s thickness and a uniform current distribution between them make a sufficiently optimum approximation.
The MPE efficiency steadily increases with increasing the ICL number, until the entire MPE thickness works at
a limiting current. The drawback of ICL is the emergence of anodic zones in sections close to the electrode’s
front end. The conditions that give rise to such zones are considered along with techniques for their suppression.
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